import java.util.*; public class HashTableDemo { public static void main(String[] args) { Hashtable numbers = new Hashtable(); numbers.put("one",new Integer(1)); numbers.put("two",new Integer(2)); numbers.put("three",new Integer(3)); Integer n = (Integer)numbers.get("two"); if(n != null) { System.out.println("two = " +n); } } }
運行結果:
two = 2